He seems a bit thin. But the length seems right. Bought a size up for my 2.5 year old to wear as a Daisy Duck for Halloween. I think the length will be a bit big (depending on your size), but we needed a larger size in the waist. like most tights. They are quite thick and I think they will last at least 4 times or so for different tightening times.
Warm and Soft Wool Socks for Kids - Cute Animal Design, Thick Thermal Crew Socks for Children and Toddlers in Winter
43 Review
Amazon Essentials Little 3 Pack Shimmer Girls' Clothing in Socks & Tights
63 Review
Children Toddler Thermal Cotton Winter Girls' Clothing
58 Review
Merino Wool Hiking Socks for 𧦠Kids - Pack of 3 by MERIWOOL
60 Review